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96dreamer's Never Ending Build Thread
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<blockquote data-quote="96dreamer" data-source="post: 16535403" data-attributes="member: 52560"><p>As I started trying to tune on e85 and make use of the flex fuel sensor I routinely experienced fuel pressure dropping off after 5000 rpms and the afrs start creeping up after 5500 rpms. The fuel system at this stage consisted of the stock system with a 450lph in tank and 80lb sd injectors.</p><p></p><p>Hoping to try and limp the system along for the year I made a few upgrades.</p><p>Hard to see in the picture but I ran a dedicated 8ga power line from the aux fuse box to a relay for the 450 pump thinking I may me getting some voltage drop through the factory wiring.</p><p>[ATTACH=full]1675884[/ATTACH]</p><p>I also replaced the factory regulator and fuel rails. I went with a fuelab regulator 10an feed from the regulator split to 2x 8an lines to fore rails in a dead head configuration. I know the dead isn't ideal but I'm hoping i can make it work due to the cleanliness it provides vs other routing options. </p><p></p><p>Everything tucked up nicely in the passenger fender well and should allow me to adapt to a full fuel system pretty easily at a later date.</p><p>[ATTACH=full]1675885[/ATTACH]</p><p>Bracket for the regulator to mount to the inner fender</p><p>[ATTACH=full]1675886[/ATTACH] [ATTACH=full]1675887[/ATTACH]</p><p>If you can manage to ignore the ugly inner fender the regulator is in there tight and doesn't contact the fender liner when installed. The factory feed line come up in the oem location where I cut the tubing shortened it about 10" and joined back up with a compression fitting. This allowed me to use an adapter to go to a 6an feed line to the regulator. The return from the regulator is 8an going to the flex fuel sensor and then to the factory return line.</p><p>[ATTACH=full]1675888[/ATTACH] [ATTACH=full]1675889[/ATTACH] [ATTACH=full]1675890[/ATTACH]</p><p></p><p>All this helped with the fuel pressure/afr issue but only netted me about 200 more rpms. I also was experiencing a wicked pressure drop when able to hook on a launch on the shifts that was causing the afr safey to trip and shut the car down. I think I'm just maxing out what is capable of the factory feed line on e85 at this point. I'm estimating it is around 550 whp at this boost level even with shifting early.</p></blockquote><p></p>
[QUOTE="96dreamer, post: 16535403, member: 52560"] As I started trying to tune on e85 and make use of the flex fuel sensor I routinely experienced fuel pressure dropping off after 5000 rpms and the afrs start creeping up after 5500 rpms. The fuel system at this stage consisted of the stock system with a 450lph in tank and 80lb sd injectors. Hoping to try and limp the system along for the year I made a few upgrades. Hard to see in the picture but I ran a dedicated 8ga power line from the aux fuse box to a relay for the 450 pump thinking I may me getting some voltage drop through the factory wiring. [ATTACH=full]1675884[/ATTACH] I also replaced the factory regulator and fuel rails. I went with a fuelab regulator 10an feed from the regulator split to 2x 8an lines to fore rails in a dead head configuration. I know the dead isn't ideal but I'm hoping i can make it work due to the cleanliness it provides vs other routing options. Everything tucked up nicely in the passenger fender well and should allow me to adapt to a full fuel system pretty easily at a later date. [ATTACH=full]1675885[/ATTACH] Bracket for the regulator to mount to the inner fender [ATTACH=full]1675886[/ATTACH] [ATTACH=full]1675887[/ATTACH] If you can manage to ignore the ugly inner fender the regulator is in there tight and doesn't contact the fender liner when installed. The factory feed line come up in the oem location where I cut the tubing shortened it about 10" and joined back up with a compression fitting. This allowed me to use an adapter to go to a 6an feed line to the regulator. The return from the regulator is 8an going to the flex fuel sensor and then to the factory return line. [ATTACH=full]1675888[/ATTACH] [ATTACH=full]1675889[/ATTACH] [ATTACH=full]1675890[/ATTACH] All this helped with the fuel pressure/afr issue but only netted me about 200 more rpms. I also was experiencing a wicked pressure drop when able to hook on a launch on the shifts that was causing the afr safey to trip and shut the car down. I think I'm just maxing out what is capable of the factory feed line on e85 at this point. I'm estimating it is around 550 whp at this boost level even with shifting early. [/QUOTE]
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